. >> interestingly, biden's comments came just hours after california senator dianne feinstein reintroduced an assault weapons ban, targeting 157 specific firearms, semiautomatic rifles, and pistols with military features and magazines, holding more than ten rounds. even feinstein acknowledged getting it through congress will be difficult. >> this is really an uphill road. if anyone asked today, can you win this, the answer is, we don't know. it's so uphill. there is one great hope out there. and that is you. because you are stronger than the gun lobby. >> the nra responded in a statement, "senator feinstein has been trying to ban guns from law-abiding citizens for decades. it's disappointing, but not surprising that she is once again focused on curtailing the constitution." nbc's kristen welker is live at the white house. and she joins us now. good morning to you, kristen. >> reporter: good morning, luke. >> so vice president joey biden is going to eric cantor's richmond, virginia, today, part of this push by the white house that they're doing in their second term to take the campaign on t